[PATCH v5 3/8] media: synopsys: Use v4l2_subdev_get_frame_desc_passthrough()

[Frank.Li at oss.nxp.com]

From: Frank Li <Frank.Li at nxp.com>

Replace the local frame descriptor callback implementation with
v4l2_subdev_get_frame_desc_passthrough().

This helper provides the same functionality while avoiding duplicate
code and simplifying the driver implementation.

Signed-off-by: Frank Li <Frank.Li at nxp.com>
---
change in v5
- new patch
---
 drivers/media/platform/synopsys/dw-mipi-csi2rx.c | 22 +---------------------
 1 file changed, 1 insertion(+), 21 deletions(-)

diff --git a/drivers/media/platform/synopsys/dw-mipi-csi2rx.c b/drivers/media/platform/synopsys/dw-mipi-csi2rx.c
index 41e48365167e5..f51367409ff46 100644
--- a/drivers/media/platform/synopsys/dw-mipi-csi2rx.c
+++ b/drivers/media/platform/synopsys/dw-mipi-csi2rx.c
@@ -630,31 +630,11 @@ static int dw_mipi_csi2rx_disable_streams(struct v4l2_subdev *sd,
 	return ret;
 }
 
-static int
-dw_mipi_csi2rx_get_frame_desc(struct v4l2_subdev *sd, unsigned int pad,
-			      struct v4l2_mbus_frame_desc *fd)
-{
-	struct dw_mipi_csi2rx_device *csi2 = to_csi2(sd);
-	struct v4l2_subdev *remote_sd;
-	struct media_pad *remote_pad;
-
-	remote_pad = media_pad_remote_pad_unique(&csi2->pads[DW_MIPI_CSI2RX_PAD_SINK]);
-	if (IS_ERR(remote_pad)) {
-		dev_err(csi2->dev, "can't get remote source pad\n");
-		return PTR_ERR(remote_pad);
-	}
-
-	remote_sd = media_entity_to_v4l2_subdev(remote_pad->entity);
-
-	return v4l2_subdev_call(remote_sd, pad, get_frame_desc,
-				remote_pad->index, fd);
-}
-
 static const struct v4l2_subdev_pad_ops dw_mipi_csi2rx_pad_ops = {
 	.enum_mbus_code = dw_mipi_csi2rx_enum_mbus_code,
 	.get_fmt = v4l2_subdev_get_fmt,
 	.set_fmt = dw_mipi_csi2rx_set_fmt,
-	.get_frame_desc = dw_mipi_csi2rx_get_frame_desc,
+	.get_frame_desc = v4l2_subdev_get_frame_desc_passthrough,
 	.set_routing = dw_mipi_csi2rx_set_routing,
 	.enable_streams = dw_mipi_csi2rx_enable_streams,
 	.disable_streams = dw_mipi_csi2rx_disable_streams,

-- 
2.43.0